<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <script type="text/javascript" src="jquery-1.8.3.min.js" ></script>
        <script type="text/javascript" src="upload.js" ></script>
        <title></title>
    </head>
    <body>
        <input type="file" id="file_upload1"/>
        <input type="button" value="上传文件" id="upload1"/>  
        <input type="file" id="file_upload2"/>
        <input type="button" value="上传文件" id="upload2"/>
        <input type="file" id="file_upload3"/>
        <input type="button" value="上传文件" id="upload3"/>
        <input type="file" id="file_upload4"/>
        <input type="button" value="上传文件" id="upload4"/>  
        <input type="button" value="ajax不能下载文件" id="download"/>   
    </body>
<!-- 	<script type="text/javascript" src="download.js" ></script> -->
	
</html>